Update comments, remove deadcode, minor tweaks
Update comments, remove deadcode, minor tweaks

amwenger/dd-genomics,HazyResearch/dd-genomics,amwenger/dd-genomics,amwenger/dd-genomics,HazyResearch/dd-genomics,rionda/dd-genomics,HazyResearch/dd-genomics,HazyResearch/dd-genomics,HazyResearch/dd-genomics,rionda/dd-genomics